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The Laboratory Quality Briefing

A regular evidence debrief for laboratory scientists. Read every edition online or subscribe to receive new editions by email.

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Latest edition

Briefing III · Patient-based quality control ·

When patient results flag a drift

A seven-year laboratory study shows what moving averages of patient results can detect between routine quality-control checks, and what it takes to investigate a signal.

In this edition
Follow a sodium drift picked up between routine checks and see how the laboratory investigated alerts.

Read Briefing III →
Bar chart of actionable alerts: 160 of 623 overall, 31 of 77 for calcium, 34 of 182 for carbon dioxide, and one of 15 for creatinine.
The laboratory judged 160 of 623 investigated alerts actionable.
Investigate a QC shift after a reagent lot change

Use paired specimens to check whether patient results shifted too.

Free internal quality control email course

Learn what control materials monitor and how to interpret a sequence of QC results.

Previous editions

Briefing II · Method comparison

Small bias. Do the results agree?

See how two comparisons with the same average bias can have very different limits of agreement, and what that means when switching methods.

Briefing I · Site update

Explore the rebuilt site

Find the free guides, calculators and courses on the rebuilt Pathology Uncertainty site, and see how to record your learning as CPD.

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